Read Sony HCD-XB8KW Service Manual online
— POWER SECTION —
• R CH : Same as L ch
• SIGNAL PATH
• SIGNAL PATH
: FM
: SUPER WOOFER
: SUPER WOOFER
Rch
Rch
Q323
Rch
1
2
4
7
PROTECTOR
IC301
PROTECT
SWITCH
Q301
RY402
OVER LOAD
DET
Q601,651
THERMAL
DET
Q670,671
THP670
S. TWEETER
GAIN
CONTROL
Q3101
S. TWEETER
GAIN
AMP
IC3101, 3102
S. TWEETER
CONTROL
SW
Q3105-3107
18
13
1
13
6
10
1
RY401
–1
–2
POWER AMP
IC601
IC601
OVER LOAD
DET
Q201
Rch
POWER AMP
IC201
REAR
CENTER
FRONT
DBFB
ST SW
STK MUTE
R RELAY
D5V
SWITCHED
D5V
SW
Q905
D905
+5V
D7V
A+7.5V
A–7.5V
+5V REG
IC902
+7V REG
IC903
+12V REG
IC904
+12V
ST10V
PRO-LOG 10V
+10V REG
IC905
+7V, –7V REG
IC901
Q907
Q901
VFDP
UNREG
–12V
POWER B+
POWER B–
SURR B+
SURR B–
AC
IN
AU/D5V SW
CD POWER
6
1
10
REAR
CENTER
FRONT
FRONT
SPEAKER
TM401
PHONES
J760
Rch
HP / SP
SWITCHING
Q401,405
S. WOOFER
GAIN CONTROL
Q3104
OVER LOAD
DET
Q3001, 3002
RELAY
DRIVE
Q3108, 3111
+B
PROTECTOR
SWITCH
Q3109
FRONT
REAR
CENTER
SURROUND
SPEAKER
TM402
6
1
2
4
7
PROTECTOR
IC3002
–1
RY3001
RELAY
DRIVE
Q404
Q404
Rch
FAN MOTOR
DRIVER
Q961, 962
M
UNREG
–12V
–12V
M901
FAN
MOTOR
REAR
CENTER
WOOFER
SYSTEM
J3201
3
1
S. WOOFER
PRE AMP
IC3003
S. WOOFER
MAIN AMP
IC3001
S. WOOFER PRE AMP
IC3103
5
1
3
1
1
10
2
9
4
3
1
3
1
RELAY
DRIVE
Q403
RELAY
CONTROL
Q402
MUTE
SWITCH
Q331
POWER ON/OFF
CD REG
Q904
+5V REG
Q906
+7.5
–7.5
EN
V
CC
V
EE
RECT
D901
D901
VF REG
Q941
RECT
D104,105
RECT
D101
D101
RECT
D102
D102
RECT
D302,303
VF
VF
T501
POWER
TRANSFORMER
MAIN
SECTION
D
09
(Page 10)
+
–
–
6
Rch
IN
OUT
3
1
2
Rch
– 11 –
– 12 –
HCD-XB8KW
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